PERATIN MANUAL IAQ50 Indoor Air Quality Monitor /Humidity/Temperature SEALED UNIT PARTS C., INC. P BX 21, 2230 LANDMARK PLACE Model: ALLENWD, NJ 7721 08720 USA 77231 www.supco.com info@supco.com 7722 77232 Phone: 732-223-6644 Fax: 732-223-1617
INTRDUCTIN Ideal for Indoor Air Quality Diagnostics. Identify Sick Builiding Syndrome due to High Levels. Features/Benefits: Triple displays of C 2 level, temperature and humidity. Stable NDIR sensor for C 2 detection Statistics of weighted averages TWA (8 hours weighted average) STEL (15 minutes weighted average) Visible and audile C 2 warning alarm Alarm output for ventilation control ABC(Automatic Baseline Calibration) and manual calibration PC connect via RS232 interface Includes 12 V Power Adapter 1
MATERIAL SUPPLIED This package contains: Meter Adaptor peration manual Plain white box PWER SUPPLY The meter is powered by an AC adaptor (12V/1A output). Air temp. Dew point Wet bulb temp. in o o C or F Symbols LCD DISPLAY MAX MIN TWA STEL PPM C ALM HLD MAX/MIN Maximun/Minimum readings TWA Time weighted average( 8 hours) STEL Short-term exposure limit (15 minutes weighted average) DP Dew point temperature AIR Air temperature WBT Wet bulb temperature Unit of relative humidity o E (C/F) Celsius/Fahrenheit /C/ALM/HLD/ Vain icons in these models concentration in ppm Relative humidity in 2
X CAL ESC RE DP/WB or X M N/ KEYPAD Enters setup mode. Saves and finishes settings. Enters C calibration with DP/WB 2. M N/ Enters RH calibration with. Exits setup page/mode. Resets the meter and clear MAX/MIN. Terminates during calibration. Selects AIR, DP, WBT temps display. Selects mode or increases value in calibration and setup. Activates MAX, MIN, STEL,TWA function. Selects mode or decreases value in calibration and setup. PWER N/FF PERATIN Plug in the adaptor and the meter turns on automatically with a short beep. It performs 30 seconds countdown(fig.1) for meter warm up, then enters normal mode with current C 2, temperature, and humidity readings displayed (Fig.2). Fig. 1 PPM Fig. 2 3
X TAKING MEASUREMENT The meter starts taking measurement after power on and updates readings every second. In the condition of opera -ting environment change (ex. from high to low temp.), it takes 30 sec to respond for C 2 sensor and 30 minutes for RH. NTE: Do not hold the meter close to faces in case that exhalation affects C 2 levels. AIR, DP, WBT Press DP/WB to switch temperatures display. The lower left display will cycle from air temperature, dew point temp. (Fig.3), and wet bulb temp.(fig.4). PPM PPM Fig.3 Fig.4 MAX,MIN, STEL,TWA X Under normal mode, press M N/ to see the minimum, maximum, and weighted M N/ average readings. Each press of, it displays MIN, MAX, STEL, TWA in sequence and returns to normal mode. In MIN and MAX modes, it shows the minimum and maximum readings of on main display and of AIR or DP or WB temperature and humidity on the lower displays. (Fig.5) PPM 4 Fig.5
In STEL and TWA modes, the main display shows the weighted average of C 2 readings for the past 15 minutes (STEL) and 8 hours(twa). The lower displays are the current AIR, DP/WB temperatures and humidity. (Fig.6) STEL PPM Fig.6 NTE: 1.If the meter is turned on for shorter than 15 minutes, the STEL value will be the weighted average of readings taken since power on. Same for TWA values appear before 8 hours. 2.It takes at least 5 minutes to calculate STEL and TWA. The display shows ---- (Fig.7) during the first 5 minutes from power on. STEL Fig.7 ALARM ALARM & UTPUT The meter features visible and audible alarm to give warnings when C 2 concentration exceeds the limit. Users can set up 2 limits: An upper limit for alarm threshold that requires air conditioning and a lower limit to stop the alarm. (See P1.0 in setup for setting alarm limits). 5
It emits beeps(abt.80db) with blinking LED when C 2 level goes over the upper limit. Beeps can be stopped by pressing any key or automatically stops when C 2 reading falls below lower limit. If the beeper is temporarily shut, it will sound again when readings fall below lower limit and then go over the upper limit again, or users press than 1 second to activate it. LED alarm keeps blinking when beeps are manually shut. It stops only when readings fall under the lower limit. RE for more ALARM UTPUT C 2 / H umidity/ Temperature IAQ50 Alarm utput RS232 Adaptor The meter is designed with a relay to send output for further connection. When C 2 readings go over the upper limit and cause alarming. The relay picks up automatically and send output. It can be connected to a ventilation system or activator for conditioning the air quality. The relay will drop out when C 2 readings fall under the lower limit. 6
DP/WB UP Hold down under normal mode for more than 1 sec to enter setup mode. CAL To exit setup, press ESC in P1.0, P3.0, or P4.0 and it returns to normal mode. Note: P2.0 is not applicable in these models but for future model with C and C 2 measurements. P1.0 C 2 ALARM: UPPER&LWER LIMITS When entering setup mode, P1.0 and AL (Fig.8) are displayed on the LCD. Press again to go into P1.1 for setting C 2 upper limit. The current set value will be blinking on LCD(Fig.9). PPM Fig. 8 Fig. 9 Press or to increase the value or X M N/ to decrease. Each press tunes 100 ppm and the alarm range is from 100 to 9900ppm. CAUTIN: It s suggested to set up the alarm value within specification range that accuracy is ensured. The out of spec readings are only for reference and not suitable to use as alarm limits. 7
X X When the preferred value is set, press to go into P1.2 (Fig. 10) for lower limit setting. After both settings are CAL done, press to save or ESC without saving and return to P1.0. PPM Fig. 10 P3.0 TEMPERATURE SCALE Press DP/WB in P1.0 to access P3.0 for setting up temperature scale(fig.11). Press and it goes into P3.1 with o o blinking C or F current set(fig.12) on o o the lower left display. To switch C or F, M N/ press DP/WB or. Then press to save CAL the setting or without saving and ESC return to P3.0 Fig. 11 Fig. 12 P4.0 ABC SELECTIN ABC (Automatic Baseline Calibration) is to implement baseline calibration to eliminate the zero drift of the infrared sensor. The ABC function default is off when turning on the meter. Users can enable it by following the procedure. M N/ DP/WB Press in P3.0 or in P1.0 to access P4.0 for selecting ABC function.(fig.13). Fig.13 8
X Press and it goes into P4.1 with blinking dis default (Fig.14) on the lower left display. To enable the ABC M N/ function, press DP/WB or and En blinks for choice(fig. 15). After the preferred selection is done, press to save the CAL setting or ESC without saving and return to P4.0 Fig. 14 Fig. 15 C 2 CALIBRATIN The meter is calibrated at standard 400ppm C 2 concentration in factory. It s suggested to do either ABC or manual calibration regularly to maintain good accuracy. CAUTIN: 1. Do not calibrate the meter in the air with unknown C 2 level. therwise, it will be taken as 400 ppm and leads to inaccurate measurements. 2. When operating the meter in the close indoor areas that are not ventilating, such as hospitals or offices with windows shut, be sure to disable the ABC function to prevent incorrect calibration. 9
ABC (Automatic Baseline Calibration) ABC is to calibrate the meter at the minimum reading detected during 7 days continuous monitoring (power on). It is supposed that the ventilating area can have fresh air with C 2 level in around 400ppm during a period of time. It s not suitable to implement ABC in close area with higher C level. 2 The ABC default is off. To enable the function, please refer to UP P4.0. Manual Calibration The manual calibration is suggested to be done in outdoor area with ventilating fresh air where C 2 level is around 400 ppm. Do not calibrate in places crowded with people or close to where with high C 2 concentration such as ventilating outlets or fireplaces. Place the meter in the calibration site. CAL Turn on the meter and hold down ESC and DP/WB simultaneously to enter C 2 calibration mode (Fig.16). 400ppm and CAL are blinking on the LCD while performing calibration. PPM Fig. 16 Wait about 5 minutes until the blinking stops and the calibration is completed automatically and return to normal mode. To abort the calibration, press more than 1 second. 10 RE for
X RH CALIBRATIN The meter defaults to be calibrated the humidity with 33 and 75 salt solution. The ambient condition is recommended o to be at 25 C and stable humidity(better to be close to the calibrating value). To abort calibration, hold down than 1second at any time. for more CAUTIN: Do not calibrate the humidity without the default calibration salt. therwise, it will cause permanent damage. RE 33 calibration Magnesium Chloride - MgCL2 6 H2 Plug the sensor probe into 33 salt CAL M N/ bottle. Hold down ESC and under normal mode to enter 33 calibration (Fig.17). CAL and calibrating value o (32.7 if at 25 C) are blinking on the LCD with current temperature at the left. Meter is now calibrating, and will finish in about 60 minutes when CAL and humidity stop blinking. (Fig.18) Fig. 17 11 Fig. 18 75 calibration Sodium Chloride - NaCL After 33 calibration, plug the sensor probe into 75 salt bottle, then press to enter 75 calibration (Fig.19).
Calibration Salt Solutions are not available through SUPC. Fig.19 CAL and calibrating value (75.2 if o at 25 C) are blinking on the LCD with current temperature at the left. Meter is now calibrating. Wait about 60 minutes until blinking stops, then calibration is completed and it returns to normal mode. NTE: Users can also calibrate either point. CAL To calibrate 33 only, press ESC to exit when 33 calibration is completed. X M N/ To calibrate 75 only, press DP/WB or within 5 minutes while initializing 33 calibration. And it skips 33 and enters 75 calibration mode. TRUBLESHTING? Can t power on Check whether the adaptor is well plugged.? Slow response Check whether the air flow channels on the rear were blocked.? Error messages E01: C 2 sensor damaged. E02: The value is under range. E03: The value is over range. E04: The original data error results in this error (RH, DP, WB) E07: Too low voltage to measure. Check if the adaptor output is 12V. E11: Retry humidity calibration. E17: Retry C 2 calibration. E31: Temperature sensor damaged. E34: Humidity sensor damaged. 12
PC CNNECTIN The meter can do PC link for on-line logging and data analysis via RS232 interface and software. The protocol is as follows. A. 9600 bps, 8 data bits, no parity. B. Format (ASCII) Model IAQ50 Cxxxxppm:Txxx.xC(F):Hxx.x: dxxx.xc(f):wxxx.xc(f) LRC CRLF Description: $C 2:Air:RH:DP:WBT LRC CRLF Range SPECIFICATIN IAQ50 0-2000ppm, Accuracy +50ppm +5 Reading 2001-9999 Accuracy (not specified) Resolution 1 ppm Pressure +1.6 reading per kpa deviation Dependence from normal pressure, 100kPa Temperature Range 14 F-140 F (-10.0-60.0 C) Resolution 0.1 F / 0.1 C Accuracy +0.9 F / +0.6 C Humidity Range 0.0-99 Resolution 0.1 Accuracy +3 (10-90) +5 (others) Warm Up 30 seconds perating 32 F-106 F (0-50 C), 0-95RH (avoid condensation) Storage 68 F-140 F (-20-60 C), 0-99RH (avoid condensation) Power 12V adaptor 13
WARRANTY The meter is warranted to be free from defects in material and workmanship for a period of 2 years from the date of purchase. This warranty covers normal operation and does not cover misuse, abuse, alteration, neglect, improper maintenance, or damage resulting from leaking batteries. Proof of purchase is required for warranty. Warranty is void if the meter has been opened. 14
Appendix LEVELS AND GUIDELINES Non-Enforced Reference levels NISH recommendations 250-350 ppm: normal outdoor ambient concentrations 600 ppm: minimal air quality complaints 600-1000 ppm: less clearly interpreted 1000 ppm: indicates inadequate ventilation; complaints such as headaches, fatigue, and eye/throat irritation will be more widespread. 1000 ppm should be used as an upper limit for indoor levels. EPA Taiwan: 600ppm and 1000ppm Type 1 indoor areas such as department stores, theaters, restaurants, libraries, the acceptable concentration of 8 hours avarge is 1000ppm. Type 2 indoor areas with special requirements of good air quality such as schools, hospitals, day care centers, the suggested level is 600ppm. Regulatory exposure limit ASHRAE Standard 62-1989: 1000ppm concentration in occupied building should not exceed 1000ppm. Building bulletin 101 (BB101): 1500ppm UK standards for schools say that at averaged over the whole day(i.e. 9am to 3.30 pm) should not exceed 1500ppm. SHA: 5000ppm Time weighted average over five 8-hour work days should not exceed 5000ppm. Germany, Japan, Australia, UK...: 5000ppm 8 hours weighted average in occupational exposure limit is 5000ppm. 15